Singapore’s sky has gone that familiar flat grey, and the official numbers explain why. On 14 October 2026, the National Environment Agency (NEA) reported a 24-hour Pollutant Standards Index (PSI) of 118 to 168, which sits in the Unhealthy range, and it expects the next day to land somewhere between Unhealthy and Very Unhealthy.
That forecast shapes decisions you’ll make today: whether to go on the evening run or the walk to school, whether to keep the bedroom window open tonight, and whether your grandparents should collect free masks. Here’s what the official advice says, sorted so you can act on it.
Where Things Stand
According to NEA’s 14 October haze update, dense smoke from fires in Kalimantan was drifting towards Singapore, with more smoke haze seen over Sumatra. The 1-hour PM2.5 readings that afternoon ran from 139 to 251 µg/m³. PM2.5 refers to fine particles 2.5 microns across or smaller, and that spread covers everything from the Elevated band to the Very High band.
Minister for Sustainability and the Environment Grace Fu said in a media soundbite on 13 October that more hotspots in Sumatra and Kalimantan, combined with unhelpful winds, had made conditions worse. She warned that the PSI could climb past 200, into Very Unhealthy territory, even with rain expected over the weekend. The regional outlook on haze.gov.sg agrees, saying dry conditions in fire-prone areas mean the risk of severe transboundary haze is still there.
View this post on Instagram
NEA’s Instagram post on how El Niño can raise the risk of haze.
Two Numbers, Two Jobs
Singapore publishes two readings, and each one answers a different question. The 24-hour PSI is for planning tomorrow. NEA’s poster, How to plan your outdoor activities during haze, says the PSI forecast and its health advisory “should be used when planning for next day outdoor activities.” The bands run Good (0 to 50), Moderate (51 to 100), Unhealthy (101 to 200), Very Unhealthy (201 to 300) and Hazardous (above 300).
The 1-hour PM2.5 reading is your right-now number, since the same poster says it “indicates the current air quality.” Check it before heading out in the next few hours:
- Band 1, Normal (0 to 55): “CONTINUE with normal activities”
- Band 2, Elevated (56 to 150): reduce strenuous outdoor activity for the next hour; vulnerable people should avoid it
- Band 3, High (151 to 250): avoid strenuous outdoor activity; vulnerable people should avoid all outdoor activity
- Band 4, Very High (251 and up): minimise all outdoor activity; vulnerable people should avoid it entirely
NEA counts “the elderly, pregnant women, children, and persons with chronic lung disease or heart disease” as vulnerable.
View this post on Instagram
NEA’s Instagram post on whether visibility is an indicator of air quality.
What to Do This Week
Here’s how NEA’s 24-hour advice plays out across the two bands in the forecast:
| 24-hour PSI | Healthy people | Elderly, pregnant women, children | Chronic lung or heart disease |
|---|---|---|---|
| Unhealthy (101 to 200) | Reduce prolonged or strenuous outdoor exertion | Minimise prolonged or strenuous outdoor exertion | Avoid prolonged or strenuous outdoor exertion |
| Very Unhealthy (201 to 300) | Avoid prolonged or strenuous outdoor exertion | Minimise outdoor activity | Avoid outdoor activity |
The poster’s glossary helps here. Reduce means do less, minimise means do as little as possible, and avoid means don’t. “Prolonged” means several hours of continuous exposure. NEA adds that anyone feeling unwell should see a doctor.
For children, the Ministry of Health (MOH) HealthHub page uses the same thresholds, so at Unhealthy levels kids should minimise prolonged or strenuous outdoor exertion. According to MOH, the most important precaution for children is following that advisory, which matters more than any mask.
Surgical Mask or N95
These masks do different jobs. MOH says ordinary surgical masks don’t filter fine haze particles well, though they can ease irritation by putting a barrier over your nose and mouth. An N95 respirator, according to the Health Sciences Authority (HSA), is certified by the US National Institute for Occupational Safety and Health (NIOSH) to filter at least 95% of very small particles.
You probably need an N95 less often than you think. MOH says one isn’t needed for short exposure or indoors, and that healthy people spending hours outdoors when the forecast is Hazardous may cut their exposure with a well-fitted N95. For vulnerable people, NEA’s advice is that they may wear one when the forecast is Very Unhealthy.
Fit is everything, and HSA warns that a respirator that doesn’t seal against your face may not protect you properly. MOH’s six-step guide tells you to press the metal strip against the bridge of your nose, then breathe in and out to check for leaks around the edges. MOH also cautions that N95s make breathing harder and can cause tiredness or headaches, so take a break if you feel uncomfortable, and talk to your doctor first if you have a severe heart or lung condition. According to MOH, women in their second or third trimester should only wear one for short periods.
There are some things to skip, too. HSA warns against masks with exhalation valves, and its shopping advice is to look for the NIOSH certificate number and an expiry date that hasn’t passed, and to avoid unknown sellers.
Kids Need a Different Plan
MOH’s leaflet states it plainly: “N95 masks are not certified for use on children, so children should remain indoors as much as possible.” HSA explains that adult-sized respirators aren’t designed for children, and suggests a child-sized respirator where available, or a surgical mask, if a child needs protection.
Free N95s at Community Clubs
The Government began a phased distribution of N95 masks on 14 October, and each eligible person gets one pack of two masks. Pioneer and Merdeka Generation members, Community Health Assist Scheme (CHAS) Blue and Orange cardholders, Medical Fee Exemption Card holders and ComCare recipients can collect at community clubs or at designated vending machines in selected transport hubs and community venues. Pregnant women, children aged 7 to 16 and people with medical conditions such as asthma collect at community clubs only.
Bring the eligible person’s NRIC, which also lets a relative or friend collect on their behalf. Stock is rolling out progressively, so check HazeMaskGoWhere for locations and availability before you go. Air-conditioned rooms at community clubs are open as haze shelters, and NEA says their hours will extend to 10pm if the PSI reaches Hazardous.
Close the Windows, Pick HEPA
NEA’s tips for indoor air date back to 2014, but the basics still hold. Close doors and windows when the outdoor air is bad, and open them again once it improves, because a sealed room can build up heat and carbon dioxide. If your air-conditioner pulls in outside air, as window units do, close that intake.
For a purifier, NEA recommends a HEPA (High Efficiency Particulate Air) filter and a smoke Clean Air Delivery Rate (CADR) of at least three times the room’s volume in cubic metres. NEA’s own example is a 120m³ room, which needs a smoke CADR of 360. Keep the room closed and don’t block the airflow, and NEA’s guidance on portable air cleaners says to keep any ozone-generating function switched off.
Check Before You Step Out
The live readings are on haze.gov.sg, nea.gov.sg and the myENV app, so make the 1-hour PM2.5 band part of your routine before every outing this week, and keep the NEA PSI and PM2.5 poster on your phone for quick reference.
If anyone at home is eligible, collect their two free N95s now, using the details in NEA’s 14 October haze update.
Read us first on Google: add DANAMIC as a preferred source and our stories show up more in your Top Stories and AI results.
